polar ice caps are abiotic

Changes in the population

EXAMPLE: Say shelter for bunnies is low the polar bears will eat them and then no more polar bear food then the population of the polar bears drops.

limiting factors

Limiting factors are things that prevent a population from growing any larger. An example is if the snow hair die out the polar bear source of food is gone and they die out.

energy roles

Our energy starts at grass patches and moves up from there.

grass patches

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snow bunnies

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polar bears

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decomposer

Producers are very important because they start the energy flow.

Food webs are more realistic because they show all the animals in a ecosystem.

Plant photosynthesis

An example of photosynthesis:

Formula for photosynthesis:

Tropisms

Tropisms are directional movement responses that occur in response to a directional stimulus. Plants are not able to relocated if they happen to start growing where conditions are suboptimal.

The role of decomposers

Decomposers and scavengers break down dead plants and animals.

If there wasn't any decomposers in the arctic waste of these animals would be too much and nothing would be recycled to the population.

Foxes would play the role as the decomposer or scavenger of the arctic population.

Adaptations

An adaptation is a feature that is common in a population because it provides some improved function.

Foxes are decomposers that is an adaptation.

They would die because they wouldn't be adapted for that population.

Natural selection |

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Natural Selection

The process where organisms better adapt to their environment to survive and produce more offspring(s).

EXAMPLE: Natural selection in the arctic is shown in polar bears. One bear was born white and produced more offspring more like it and the brown bears died out because they were visible to their prey. The white bears survived with their camo and now all polar bears are white.